I am reading this sample app, and noticed that the call for subscriptions happens in viewDidLoad(). This raises the following question:
1) Is the user subscribed to event comments only when he/she is in that particular view controller? In other words, if the user navigates to another scene, is the subscription no longer in effect? How can I make it so that once a user subscribes to something, he/she is subscribed to it until told to stop?
I also have another question:
2) Can I changed the parameters passed to a subscription during the app? For instance, if I am subscribing to multiple events, then I would pass an array of event_id as parameter. For some condition, I will add an event to the array. So each time I add an event, do I have to restart the subscription?
Related
I have a question regarding the effect of eventually consistent (EC) microservice systems.
Imagine we have a booking system - a user-service A and booking-service B. Each service has its own database. Imagine the system does a concurrent booking of the same resource for distinct users at the same time. Lets assume we have a Runtime Verification System checking the concurrent booking.
Would it be possible that the monitor does not realize the concurrent booking at B, because the update in the database is done delayed because of the EC mechanism?
In your example, the Booking Service is the source of truth (presumably) for whether or not the resource is available to book. So, that service should be pretty clear on allowing the first booking request to happen and rejecting the second.
In a case like this, where "first come first served" is the requirement, you'd want an intermediate state that would wait for a response from the Booking Service and update the User Service only when a response has been received.
If your architecture is set up right, User Service shouldn't be calling Booking Service directly anyway - it should be communicating through a messaging plane. As such, when the User clicks "Book Now," you could generate a resourceBookingRequested message and submit it to the queue. You'd acknowledge this request has been queued to the user and update their UI to "Awaiting Booking Confirmation..." or something similar.
Once the booking is accepted, or rejected, the User Service subscribes to the resulting message and updates the UI (and/or takes other actions like sending an email) to let the user know their request succeeded or didn't.
my tried wayI am trying to know when i am sending push notification to users they will open the notification or not. i am able to get the number of sent notification or number of successful and failed notification but i am unable to get the user response record.I am using aws sns push notification with fcm
it's easy!
Just put a little code in notification code, when user clicked the notification it gets the value from the database which is 0 when you start sending the notification, and add +1 in it and again store that value in the database.
This is the simple way you can check how many people open your notification.
Regards,
Sameer Rehman
We need to create a monitor that will show any income calls in our extranet in live time.
We were able to show active calls by using /account/~/extension/~/active-calls, however, to achieve what we need we would need to make a request each second which I guess will be blocked by rate limits.
Is there a better solution for it?
Thanks
Subscription (Push Notification) API resource empowers developers to enable the client application(s) to create a single subscription (to one or more extension's) and continually receive push notifications in real time for each subscribed extension.When using this approach for your application(s) to receive events on your RingCentral account, no polling is involved.
You can create a subscription using either of the below-mentioned transportType for receiving push notifications:
PubNub
WebHook
Notifications which the client wants to receive can be specified by the event filters which are set in the subscription request. The event filter is exposed as a URL, pointing to the required RingCentral API resource. Currently the following event types are available for notifications: extensions, messages and presence. They are described in detail below:
Notifications Event Types
You can take a look at the Subscription API below:
Subscription API
If you are interested in Subscribing to Push notifications via WebHook then we have an Easy-to-follow Quickstart guide here:
RingCentral Webhooks Quickstart Guide
I want to update the status of the order when the merchant manually capture an Authorize Only transaction. Is is possible? If so, how to do that?
I have gone through the link https://support.authorize.net/authkb/index?page=content&id=A64 and it is very clear about the "AUTH_ONLY" transaction. But the link does not provide the details about the callback event.
You would need to use the Webhooks API to create a webhook for those transactions. Specifically the net.authorize.payment.capture.created event. Then your system would be notified whenever a capture occurs.
I have a situation where a user can modify an Excel like grid schedule online. I would like to be able to show a message stating that the schedule is being modified in another window. However, how can I do this with a window open, and if the previous window was closed with SignalR. For other sessions I just want to state another user is modifying the schedule.
It might be easiest to use localStorage to communicate between multiple tabs/windows a single user has open: http://www.codediesel.com/javascript/sharing-messages-and-data-across-windows-using-localstorage/
You can listen for the storage event which is triggered on every window a user has open on your site when you call localStorage.setItem or localStorage.removeItem.
Of course, it would still make sense to use SignalR to notify other users.
If you cannot use the localStorage API for some reason, you can still use SignalR to send a message to every window the user has open by using Clients.User(userName).... inside your Hub. By default, userName should match your user's IPrincipal.Identity.Name, but you can register your own IUserIdProvider to customize this: http://www.asp.net/signalr/overview/signalr-20/hubs-api/mapping-users-to-connections#IUserIdProvider